Mountain Weather
Information Service
Eryri / Snowdonia National Park Forecast

Eryri / Snowdonia National Park

Includes all summits in the the northern half of Wales from Pumlumon northwards.

Today's Forecast

Light wind, negligible impact
Mostly dry, partly cloudy
Warm

Click an icon for more information or click here for a key to all icons.

Click here to download the latest PDF Last Updated Thu 31st Oct 24 at 3:44PM Last Updated Thu 31st Oct 24 at 3:44PM
View our low-graphics version Last Updated Thu 31st Oct 24 at 3:44PM Last Updated Thu 31st Oct 24 at 3:44PM

Viewing Forecast For

Eryri / Snowdonia National Park
Friday 1st November 2024
Last updated Thu 31st Oct 24 at 3:44PM

Summary for all mountain areas

Widely dull and overcast, in Highlands frequent rain, especially in the north, where windy at start. Mostly mild or warm. In England and Wales isolated spots of drizzle possible, but generally dry. Best chances for sun in northern Scotland in the afternoon, after the rain has passed.

Headline for Eryri / Snowdonia National Park

Dry but cloudy, highest tops briefly above cloud. Light winds

How windy? (On the summits)

Westerly or variable, mostly 10 to 15mph or less.

Effect of the wind on you?

Negligible.

How Wet?

Rain unlikely

Isolated spots of drizzle not fully ruled out, but generally dry.

Cloud on the hills?

Mist in valleys, especially in the morning

Low cloud may be fairly widespread in the valleys and on lower hills in the morning, later lifting to higher levels. Above 600-800m frequently clear at start, deteriorating.

Chance of cloud free summits?

50%

Sunshine and air clarity?

At times sunny above the low cloud, but murky in the valleys. Becoming dull on all levels. Excellent visibility.

How Cold? (at 900m)

11C

Freezing Level

Above the summits.

Viewing Forecast For

Eryri / Snowdonia National Park
Saturday 2nd November 2024
Last updated Thu 31st Oct 24 at 3:44PM

How windy? (On the summits)

Variable, mostly southerly, 5 to 15mph.

Effect of the wind on you?

Negligible.

How Wet?

No rain expected

Cloud on the hills?

Most likely extensive, tops perhaps clear

High uncertainty, most likely scenario: Low cloud from lower slopes upward, lifting only a little through the day. Highest tops have chance to be above the cloud.

Chance of cloud free summits?

30%

Sunshine and air clarity?

Uncertain, most likely little or no sunshine at all and poor visibility.

How Cold? (at 900m)

7 to 9C

Freezing Level

Above the summits.

Viewing Forecast For

Eryri / Snowdonia National Park
Sunday 3rd November 2024
Last updated Thu 31st Oct 24 at 3:44PM

How windy? (On the summits)

Southeasterly, 15-20mph.

Effect of the wind on you?

How Wet?

No rain expected

Cloud on the hills?

Cloud in the valleys, clear higher up

Low cloud and fog in the valleys, from mid-slopes upward clear. Lower down cloud may persist the whole day.

Chance of cloud free summits?

70%

Sunshine and air clarity?

Plenty of sunshine and excellent visibility if above the cloud.

How Cold? (at 900m)

8 to 10C, lower down much colder.

Freezing Level

Above the summits.

Planning Outlook

Back to high pressure conditions for the weekend and beginning of next week. Inversion developing means often very misty or cloudy, but tops sometimes above cloud - especially the Munros. Southwesterly winds, dry and mild conditions. Such scheme holds until mid next week, when a weak front passage will probably deteriorate weather for a day, at least in Scotland. Later another few days of often cloudy, but dry and even warmer weather. Winds may speed up again end of next week.